email stuck in the "messages waiting to be routed" queue

Posted on 2006-04-24
Last Modified: 2007-12-19
SBS 2003 Premium with SP1
Exchange 2003

The email has been running fine just fine for many weeks.  I (a few weeks ago) installed an autoresponder called Exclaimer.
There may be no connection, but now I am having a problem.

Does anyone have any information about Exclaimer
Can anyone suggest how to trouble shoot the emails stuck in the "messages waiting to be routed" queue.
I have tried restarting SMTP and IIS but the only thing that clears the queue is restarting the SBS.

Thanks for any help!
Restarting the server 2-3 times a day just to keep the email flowing is growing old.

Question by:Slator
    LVL 3

    Accepted Solution

    Queue: Messages waiting to be routed
    Description: This queue holds messages until their next-destination server is determined. The messages are then moved to their respective link queues.
    Troubleshooting: Messages may accumulate in this queue if Exchange routing problems exist. For example, message routing may be backed up. Disable any unnecessary connector restrictions because the restrictions can cause a significant degradation in server performance. You may have to turn on the CheckConnectorRestrictions registry key for some restrictions.
    For additional information about this registry key, click the following article number to view the article in the Microsoft Knowledge Base:

    Author Comment


    Thanks for the quick response.  Your information was very helpful.
    Apparently the connector problem was caused by the Exclaimer program I installed to Auto Respond to emails.
    Your connector response started me down the right path which then led to Exclaimer.


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